On Wed, Dec 11, 2013 at 06:28:23AM -0600, suravee.suthikulpa...@amd.com wrote: > @@ -295,11 +301,17 @@ static int arch_build_bp_info(struct perf_event *bp) > break; > #endif > default: > - return -EINVAL; > + if (!is_power_of_2(bp->attr.bp_len)) > + return -EINVAL; > + if (!cpu_has_bpext) > + return -EOPNOTSUPP; > + info->mask = bp->attr.bp_len - 1; > + info->len = X86_BREAKPOINT_LEN_1;
I think I asked this before but I can't remember. So dr7 must have length as LEN_1 for breakpoint extension? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
